506378 divided by 28 
The aim is to understand the frequency of 28 in 506378.

Moving on to step 1:
28 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 28

On to step 2:
50 divided by 28 is 1 with a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 28 from 50 and we're left with 22.
Append the next digit (6) from the dividend to 22 and continue with: 226 / 28

Moving on to step 3:
The number 28 fits into 226 8 times, leaving a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtracting 224 from 226 leaves us with 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 28

Let's proceed to step 4:
23 divided by 28 is 0 with a remainder of 23.
Use 0 as the next digit of our solution. 
Result so far: 180.0
Subtracting 0 from 23 leaves us with 23.
Include the next digit (7) from the dividend after 23, then repeat: 237 / 28

Step 5:
237 divided by 28 is 8 with a remainder of 13.
The number 8 becomes the next digit in our result. 
Result so far: 1808.0
Subtract 224 from 237 to get 13.
Take the next digit (8) from the dividend and append it to 13, then repeat: 138 / 28

Advancing to step 6:
If we divide 138 by 28, we get 4 and a remainder of 26.
The number 4 becomes the next digit in our result. 
Result so far: 18084.0
Subtracting 112 from 138 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 7:
260 divided by 28 is 9 with a remainder of 8.
The next digit of our result is 9. 
Result so far: 18084.9
Deduct 252 from 260 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 8:
When dividing 80 by 28, we get 2 with a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 18084.92
If we subtract 56 from 80, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 9:
28 goes into 240 8 times with a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 18084.928
The remainder is 16 after subtracting 224 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 10:
160 divided by 28 is 5 with a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 18084.9285
If we subtract 140 from 160, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
200 divided by 28 is 7 with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 18084.92857
Subtracting 196 from 200 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 12:
If we divide 40 by 28, we get 1 and a remainder of 12.
The next digit of our result is 1. 
Result so far: 18084.928571
Subtract 28 from 40 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 13:
If we divide 120 by 28, we get 4 and a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 18084.9285714
If we subtract 112 from 120, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 14:
When dividing 80 by 28, we get 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 18084.92857142
The remainder is 24 after subtracting 56 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Our division results in 18084.92857142 with a remaining 2.4e-08.